Paper presented at the 2012 Annual ASHRAE Meeting, San Antonio, USA. Impacts of air filters on energy consumption in typical HVAC systems. The effect of residential equipment capacity on energy use, demand, and run-time. James P, Cummings J, Sonne J, Vieira R, Klongerbo J (1997). Atlanta, USA: American Society of Heating, Refrigerating and Air-Conditioning Engineers. A Toolkit for Secondary HVAC System Energy Calculation.

Atlanta, USA: American Society of Heating, Refrigerating and Air-Conditioning Engineers.īrandemuehl MJ, Gabel S, Andersen I (1993). ASHRAE Handbook-HVAC Systems and Equipment, Chapters 9 and 28. Atlanta, USA: American Society of Heating, Refrigerating and Air-Conditioning Engineers.ĪSHRAE (2008). Method of testing general ventilation air-cleaning devices for removal efficiency by particle size. The fan energy use rise due to the dirty filter depends mainly on air system capacities, filter MERV ratings, and the degree of the filter cleanliness.ĪNSI/ASHRAE (2007). With a variable-speed fan, the fan energy use increases with a dirty filter but the cooling and heating energy uses are slightly affected. The results indicate that with a constant-speed fan, the cooling energy use increases as the filter gets dirty over time and the energy use in the fan may increase but this depends heavily on the investigated fan performance curve. A whole building simulation model is used to simulate the annual energy consumption for various air-conditioning system capacities, different levels of filter cleanliness, and various filter minimum efficiency reporting values (MERV). The paper explores the impact of air filtration on energy consumption for a typical air-conditioning (AC) system with constant- or variable-speed fan. Although there are many benefits of using the air filter in an air-conditioning system, the resistance associated with it can increase fan energy use and may adversely affect air-conditioning system performance and efficiency. Filters are used in heating, ventilation, and air-conditioning (HVAC) systems for both commercial and residential buildings to protect the equipment and improve indoor air quality in conditioned spaces.

Filtered airflow performance